NumberResearchRecent thousands-block assignments
1 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.
Most active assignees, last 30 days — NPA 858
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-09-16 | 858-318-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CHULAVISTA | CA |
| 2026-07-23 | 858-448-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CORONADO | CA |
| 2026-07-14 | 858-423-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNDG SNDG | CA |
| 2026-04-20 | 858-440-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LA MESA | CA |
| 2026-04-20 | 858-440-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LA MESA | CA |
| 2025-12-26 | 858-440-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LA MESA | CA |
| 2025-12-26 | 858-443-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CHULAVISTA | CA |
| 2025-12-26 | 858-443-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CHULAVISTA | CA |
| 2025-12-26 | 858-443-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CHULAVISTA | CA |
| 2025-08-22 | 858-440-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LA MESA | CA |
| 2025-06-11 | 858-439-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CHULAVISTA | CA |
| 2025-06-11 | 858-439-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CHULAVISTA | CA |
| 2025-06-11 | 858-439-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CHULAVISTA | CA |
| 2025-01-13 | 858-421-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | RNCHOBRNDO | CA |
| 2025-01-13 | 858-421-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | RNCHOBRNDO | CA |
| 2025-01-06 | 858-415-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNDG SNDG | CA |
| 2025-01-06 | 858-415-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNDG SNDG | CA |
| 2025-01-06 | 858-415-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNDG SNDG | CA |
| 2025-01-06 | 858-418-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNDG SNDG | CA |
| 2025-01-06 | 858-418-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNDG SNDG | CA |
| 2025-01-06 | 858-418-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNDG SNDG | CA |
| 2025-01-06 | 858-418-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNDG SNDG | CA |
| 2025-01-06 | 858-418-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNDG SNDG | CA |
| 2025-01-06 | 858-418-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNDG SNDG | CA |
| 2025-01-06 | 858-418-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNDG SNDG | CA |
| 2025-01-06 | 858-419-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNDG SNDG | CA |
| 2025-01-06 | 858-419-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNDG SNDG | CA |
| 2025-01-06 | 858-419-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNDG SNDG | CA |
| 2025-01-06 | 858-419-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNDG SNDG | CA |
| 2025-01-06 | 858-419-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNDG SNDG | CA |
| 2025-01-06 | 858-419-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNDG SNDG | CA |
| 2025-01-06 | 858-419-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNDG SNDG | CA |
| 2025-01-06 | 858-419-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNDG SNDG | CA |
| 2024-11-21 | 858-420-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNDG LVTA | CA |
| 2024-11-21 | 858-420-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNDG LVTA | CA |
| 2024-11-21 | 858-420-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNDG LVTA | CA |
| 2024-11-21 | 858-420-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNDG LVTA | CA |
| 2024-11-21 | 858-420-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNDG LVTA | CA |
| 2024-11-21 | 858-420-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNDG LVTA | CA |
| 2024-11-21 | 858-420-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNDG LVTA | CA |
| 2024-11-21 | 858-420-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNDG LVTA | CA |
| 2024-11-21 | 858-420-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNDG LVTA | CA |
| 2024-11-21 | 858-420-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNDG LVTA | CA |
| 2024-11-12 | 858-417-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | NATIONALCY | CA |
| 2024-11-12 | 858-417-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | NATIONALCY | CA |
| 2024-11-12 | 858-417-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | NATIONALCY | CA |
| 2024-11-12 | 858-417-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | NATIONALCY | CA |
| 2024-10-24 | 858-416-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LA MESA | CA |
| 2024-10-24 | 858-416-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LA MESA | CA |
| 2024-10-14 | 858-287-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | SNDG MRMS | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.